加工布氏硬度对试样表面要求是()。
A.光滑平面
B.留有氧化铁皮
C.任一表面
D.无要求
参考答案:A
In relation to the law of contract, distinguish between and explain the effect of:
(b) express and implied terms, paying particular regard to the circumstances under which terms may be implied in contracts. (7 marks)
ABA抑制大麦胚乳中()的合成,因此有抗()的作用。